The BD8179MUV is a system power supply IC for TFT panels. It is a 1-chip IC that provides the three voltages required for TFT panels: source voltage, gate high-level voltage, and gate low-level voltage, thus constructing a TFT panel power supply with minimal components required.
The BD8179MUV is a system power‑supply IC for TFT‑LCD panels that integrates a step‑up DC/DC converter, linear‑regulator controllers and multiple protection circuits in a single chip. It delivers the three voltages required for TFT panels – source, gate‑high and gate‑low – with minimal external components.
The document details electrical characteristics, absolute maximum ratings, pin functions, block diagrams, and recommended component selection for optimal performance. It also describes built‑in protection features such as over‑current, over‑voltage, under‑voltage lockout, thermal shutdown and short‑current protection.
| Power Supply Voltage (VIN) max | 7 V |
|---|---|
| Switching Frequency | 1200 kHz |
| Thermal Shutdown temperature (typ.) | 175 °C |
| Under‑Voltage Lockout threshold (typ.) | 2.4 V (rising) |
| Package | VQFNO32V5050 |
The device operates at a switching frequency of 1200 kHz.
The recommended operating range for VIN is 2.6 V to 5.5 V.